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How harmful is the carbon deposit in the engine? Is it necessary to clean it?
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How harmful is the carbon deposit in the engine? Is it necessary to clean it?

Views:0     Author:Site Editor     Publish Time: 2021-08-11      Origin:Site

Ordinary riders have a rather vague concept of carbon deposits on engines. First of all, because few car owners know exactly what the hazards of carbon deposits are; in addition, the damage of carbon deposits to engines is "chronic" and easily overlooked.

1. What is carbon deposition? How did it happen?

Carbon deposit is actually a general term for impurities in the engine. Including dust and particles that are not filtered out by air filtration, colloids and impurities in gasoline itself, and coke left after gasoline is burned, etc.

02

Where the carbon deposits exist

When it comes to the location of carbon deposits, it depends on different engines.

Multi-point electronic injection engine, the fuel injector of the multi-point electronic injection engine is installed in the intake port, and gasoline is injected into the intake port, and then is sucked into the cylinder by the piston. Therefore, carbon deposits mainly accumulate in fuel injectors, intake valves, cylinders, exhaust valves, exhaust ducts, etc.!

However, in the direct-injection engine used in most models, the fuel injector is directly installed in the cylinder, so the carbon deposit on the intake valve is relatively small. The carbon deposit mainly exists in the cylinder, fuel injector, exhaust valve, etc. exhaust pipe.

The mixed-injection engine integrates multi-point electronic injection and direct injection, so the carbon deposit of the mixed-injection engine will accumulate faster than the above two engines!

03

How many kilometers start to produce carbon deposits?

You may think that carbon deposits will take a long time after driving, but in fact, the speed of carbon deposits is very fast when the engine rotates several thousand revolutions per minute. German survey data show that carbon deposits on a new car begin to form after 1,000 kilometers, and it will affect engine work after 5,000 kilometers.

04

What are the hazards of carbon deposits? What will happen if it is not cleaned up?

The hazards of carbon deposits have the characteristics of "chronic" and "difficult to detect", because carbon deposits occur slowly, and it is difficult for ordinary consumers to detect them while driving. There are three main hazards of carbon deposits to the engine.

01

Power is weakened, fuel consumption increases

Carbon accumulation in the intake valve will affect the amount of intake air, and the reduction of intake air while the fuel injection amount remains unchanged will cause fuel waste and power drop. In addition, if carbon deposits block the fuel injector, the sprayed gasoline cannot be fully atomized and cannot be fully mixed with the air, resulting in insufficient combustion.

02

Engine knock

The main cause of engine knock is the pre-ignition of the fuel in the cylinder. The engine starts to ignite before the crankshaft reaches its highest point. Not only does the impact generated by the explosion fail to accelerate, it will produce a reaction force, which will happen at this time. Knock.

The carbon block with carbon deposits rapidly heats up under the high temperature and high pressure of the cylinder, and even spontaneous combustion occurs. The mixture is ignited before the spark plug is ignited, leading to pre-ignition and knocking. Knock not only weakens the engine's power, but also causes damage to the engine connecting rod and crankshaft, and also increases fuel consumption.

03

Engine noise becomes louder

Due to carbon deposits, the engine power becomes weak. If you want to exert the same power, you need to increase the speed. If the speed is high, the noise will naturally increase. In addition, knocking can also cause engine noise to become louder. Many new cars travel less than 10,000 kilometers, and the engine noise becomes noticeably louder when accelerating, most of which are caused by carbon deposits.

CAUTION!

If the carbon deposits are not cleaned up for a long time, it will have a relatively large impact on the power and economy of the car! Relevant European survey data show that cars that have not cleared carbon deposits for 20,000 kilometers continuously consume 10% more fuel per 100 kilometers than cars that regularly clean carbon deposits, and that fuel consumption in urban areas is 20% more!

To prevent carbon deposits, car owners should: avoid prolonged idling; run at high speeds appropriately to make full use of the airflow to the intake air to avoid carbon deposits; regularly replace the air filter; use good engine oil, etc.


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